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Re: Patch submission for AltGr handling
- To: <cygwin at cygwin dot com>
- Subject: Re: Patch submission for AltGr handling
- From: Jason Tiller <jdtiller at best dot com>
- Date: Mon, 5 Mar 2001 17:56:35 -0800 (Pacific Standard Time)
Hi, DJ, :)
On Mon, 5 Mar 2001, DJ Delorie wrote:
> This is Jason:
> > Thanks for the tip. I do see how that works. One thing I don't
> > understand, though - why do you go through the code you do to load
> > procedure addresses instead of LoadProcAddress()'ing them?
> The idea is that the first time you call our stub function, it does
> call LoadProcAddress. Then it rewrites the stub to simply jump to
> the new address, and jumps back to the stub! The second time the
> stub is called, it has nothing but the jump in it.
> You can't just call the function, because you don't know what the
> parameters look like (well, we do, but it's not automatic like the
> jmp is, and jmp is faster).
Ah, I see. This saves quite a bit of code, too, it seems. All of
those nasty LoadProcAddress()'es and what. Plus, it seems to have a
serious performance advantage. Still, gnarly code. Thanks for the
info!
---Jason Tiller
jtiller@sjm.com
Sonos
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